Provided are a method by which an access and mobility function (AMF) in a wireless communication system selectively alters a tracking area set, and a device supporting the method. The method may comprise the steps of: receiving a plurality of tracking area sets from a base station; receiving, from the base station, information about the mobility of a terminal; and selecting any one tracking area set that corresponds to the received terminal mobility information.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A method for selectively changing, by an access and mobility function (AMF), a tracking area set in a wireless communication system, the method comprising: receiving a plurality of first tracking area sets from a plurality of base stations; receiving information on mobility of a user equipment (UE) from the plurality of base stations; reconfiguring a plurality of second tracking area sets based on the plurality of first tracking area sets; and selecting a second tracking area set from among the plurality of second tracking area sets corresponding to the received information on the mobility of the UE.
2. The method of claim 1 , wherein the plurality of first tracking area sets is configured by the BS based on the mobility of the UE.
3. The method of claim 2 , wherein the information on the mobility of the UE is a speed of the UE.
4. The method of claim 2 , wherein the second tracking area set is configured as a small tracking area for a UE having low mobility and is configured as a large tracking area for a UE having high mobility.
5. The method of claim 4 , wherein when the UE has low mobility, the second tracking area set configured as the small tracking area is selected.
6. The method of claim 4 , wherein when the UE has high mobility, the second tracking area set configured as the large tracking area is selected.
7. The method of claim 1 , wherein the plurality of first tracking area sets is received from the plurality of base stations when an interface between the plurality of base stations and the AMF is set up.
8. The method of claim 1 , wherein the information on the mobility of the UE is received from the plurality of base stations when a UE-associated connection is established between the BS and the AMF.
9. The method of claim 1 , wherein the information on the mobility of the UE is received from the plurality of base stations when context of the UE is released.
10. The method of claim 1 , wherein the information on the mobility of the UE is received from the plurality of base stations when a handover is performed through the AMF.
11. The method of claim 1 , further comprising: receiving information on changed mobility of the UE from the plurality of base stations.
12. The method of claim 11 , further comprising: changing the second tracking area set to another second tracking area set from among the plurality of second tracking area sets corresponding to the changed mobility of the UE.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
July 7, 2017
March 17, 2020
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